TB 9-6625-2045-35
b. Items of equipment used in this procedure are referenced within the text by common
name and item identification number as listed in tables 2 and 3. For the identification of
equipment referenced by item numbers prefixed with A, see table 2, and for prefix B, see
NOTE
Unless otherwise specified, verify the result of each test and,
whenever the test requirement is not met, take corrective
action before continuing with the calibration. Adjustments
required to calibrate the TI are included in this procedure.
Additional maintenance information is contained in the
manufacturer's manuals for this TI.
NOTE
Unless otherwise specified, all controls and control settings
refer to the TI.
7. Equipment Setup
a. Remove TI from protective case only to gain access to adjustments.
c. Mechanically zero NULL meter on TI.
d. Set ORTHONULL NORMAL switch to ORTHONULL (IN).
e. Install 4 D cell batteries into TI.
8. DQ Dial
a. Performance Check
(1) Connect ground strap between BIAS + and BIAS - terminals on TI.
(2) Connect EXT GEN AC-DC ground terminal and BIAS + terminal on TI
(UNKNOWN HIGH AND LOW terminals) to unknown 1 and 2 on resistance bridge (A3),
using leads (B3 and B4).
(3) Adjust CRL (CGRL) dial to 0.
(4) Set CRL MULTIPLIER (MULTIPLIER) switch to k Ω100 (k Ω x 100).
(5) Set CRL SELECTOR (PARAMETER) switch to Cp.
(6) Adjust DQ dial to 50 on high D scale. If resistance bridge does not indicate
between 31.04 and 32.96 (31.44 and 33.36) ohms, perform b below.
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